Valencia Water Reclamation Plant Middle Section Retaining Wall Ground Improvement Project

Valencia Water Reclamation Plant Middle Section Retaining Wall Ground Improvement Project

Santa Clarita Valley Sanitation District (SCVSD) has determined through previous studies that under a Capital Storm event, the Valencia Water Reclamation Plant (VWRP) has the potential to be exposed to erosion along approximately 1,000 feet of the middle section of the existing retaining wall and along the VWRP boundary after flooding due to scour. If the wall is undermined by scour or damaged by a significant earthquake event, VWRP facilities may be damaged or destroyed. The proposed project includes a new ground retaining wall structure to fortify the middle section of the wall and protect the VWRP during a flood scour event and design-level earthquake. In addition, the proposed project would include updates to two existing outfall structures. Temporary construction work would occur along the VWRP boundary as well as an existing Significant Ecological Area (SEA) and California Department of Fish and Wildlife easement west of the VWRP. An operations and maintenance area would be cleared around the existing SCVSD outfall easements for continued use during long-term maintenance of the outfall structures.

Santa Clarita

Los Angeles

Southern California

California Air Resources Board (ARB), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Toxic Substances Control (DTSC), California Department of Water Resources (DWR), California Highway Patrol (CHP), California Natural Resources Agency, California Regional Water Quality Control Board, Los Angeles Region 4 (RWQCB), California State Lands Commission (SLC), Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights, State Water Resources Control Board, Divison of Financial Assistance, California Native American Heritage Commission (NAHC), California Department of Transportation, District 7 (DOT), California Department of Fish and Wildlife, South Coast Region 5 (CDFW)

California Native American Heritage Commission (NAHC), California Department of Transportation, District 7 (DOT), California Department of Fish and Wildlife, South Coast Region 5 (CDFW)

Waste Treatment:Other (Water reclamation plant)(MGD 21.6)

Water reclamation plant upgrade

Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Geology/Soils, Greenhouse Gas Emissions, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mandatory Findings of Significance, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Vegetation, Wetland/Riparian, Wildfire